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| Centuries: | 5th century BC - 4th century BC - 3rd century BC |
| Decades: | 420s BC 410s BC 400s BC - 390s BC - 380s BC 370s BC 360s BC |
| Years: | 401 BC 400 BC 399 BC - 398 BC - 397 BC 396 BC 395 BC |
| 398 BC by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 398 BC |
| Ab urbe condita | 356 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2241 – -2240 |
| Berber calendar | 553 |
| Buddhist calendar | 147 |
| Burmese calendar | -1035 |
| Byzantine calendar | 5111 – 5112 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2239/2299) — to —
[[Sexagenary cycle|]]年(2240/2300) |
| Coptic calendar | -681 – -680 |
| Ethiopian calendar | -405 – -404 |
| Hebrew calendar | 3363 – 3364 |
| Hindu calendars | |
| - Vikram Samvat | -342 – -341 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2704 – 2705 |
| Holocene calendar | 9603 |
| Iranian calendar | 1019 BP – 1018 BP |
| Islamic calendar | 1050 BH – 1049 BH |
| Japanese calendar | |
| Korean calendar | 1936 |
| Thai solar calendar | 146 |
Events
By place
Sicily
- Dionysius, tyrant of Syracuse, breaks his peace treaty with Carthage and strikes at Carthaginian cities in the western corner of Sicily which have been weakened by the plague. There is a massacre of Carthaginians in many of these cities. Motya, with its fine harbour, is attacked and captured.
Births
Deaths
